142537289 has 4 divisors (see below), whose sum is σ = 142593024. Its totient is φ = 142481556.

The previous prime is 142537277. The next prime is 142537331. The reversal of 142537289 is 982735241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142537289 - 2²⁰ = 141488713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142537249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23837 + ... + 29210.

It is an arithmetic number, because the mean of its divisors is an integer number (35648256).

Almost surely, 2^142537289 is an apocalyptic number.

It is an amenable number.

142537289 is a deficient number, since it is larger than the sum of its proper divisors (55735).

142537289 is an equidigital number, since it uses as much as digits as its factorization.

142537289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55734.

The product of its digits is 120960, while the sum is 41.

The square root of 142537289 is about 11938.8981484892. The cubic root of 142537289 is about 522.3675193528.

The spelling of 142537289 in words is "one hundred forty-two million, five hundred thirty-seven thousand, two hundred eighty-nine".